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Composite building material with alkaline-residue light-weight aggregate and preparation method thereof

A technology for composite building materials and lightweight aggregates, which is applied in the field of alkali slag lightweight aggregate composite building materials and its preparation, can solve the problems of difficult resource utilization of light parts in alkali slag, poor weather resistance, and low stability. Achieve the effects of easy production deployment, reduced energy consumption, and improved stability

Inactive Publication Date: 2018-09-25
安溪中科镁基科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of difficulty in recycling the light part of alkali slag, low stability, easy cracking of existing building materials containing alkali slag, and poor weather resistance

Method used

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  • Composite building material with alkaline-residue light-weight aggregate and preparation method thereof

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preparation example Construction

[0037] A method for preparing an alkali slag lightweight aggregate composite building material, comprising the following steps:

[0038] (1) Separation of light aggregate from alkali slag: take advantage of the characteristic that the heavy part of industrial alkali slag has a large particle size and the light part has a small particle size. Part of the alkali slag passes through a 60-mesh sieve, and the alkali slag that does not pass through the 60-mesh sieve is taken to obtain the alkali-slag lightweight aggregate;

[0039] (2) Get the alkali slag lightweight aggregate obtained in the step (1), add mineral admixture and mass fraction and be 10~20% water glass solution, add the water of system quality 20~80% in the system after mixing, Stir evenly and keep for 6-48 hours to obtain stabilized alkali slag lightweight aggregate; the addition amount of the alkali slag lightweight aggregate is 70-85%, and the addition amount of the mineral admixture is 0-12.3% , the addition amou...

Embodiment 1

[0049] Such as figure 1 Shown, a kind of preparation method of alkali slag lightweight aggregate composite building material comprises the following steps:

[0050] (1) Separation of alkali slag lightweight aggregate: sieve the alkali slag, pass the alkali slag through a 20-mesh sieve, take the alkali slag that passes through the sieve and pass through a 60-mesh sieve, and take the alkali slag that does not pass through the 60-mesh sieve Obtain lightweight aggregate of alkali slag;

[0051] (2) Stabilization of alkali slag lightweight aggregate: take 300 g of alkali slag lightweight aggregate obtained in step (1), add 120 g of water, stir evenly and keep for 24 hours to obtain stabilized alkali slag lightweight aggregate material;

[0052] (3) Preparation of magnesium chloride solution: 14g of magnesium chloride is prepared into an aqueous solution with a mass fraction of 20%, and 0.3g of emulsified silicone oil defoamer is added, fully stirred until the solution is clear; ...

Embodiment 2

[0058] Such as figure 1 Shown, a kind of preparation method of alkali slag lightweight aggregate composite building material comprises the following steps:

[0059] (1) Separation of alkali slag lightweight aggregate: sieve the alkali slag, pass the alkali slag through a 20-mesh sieve, take the alkali slag that passes through the sieve and pass through a 60-mesh sieve, and take the alkali slag that does not pass through the 60-mesh sieve Obtain lightweight aggregate of alkali slag;

[0060] (2) Stabilization of alkali slag lightweight aggregate: get 340g of alkali slag lightweight aggregate obtained in step (1), add 40g fly ash, add 320g water after 20g silicon powder, stir and keep for 48 hours, The stabilized alkali slag lightweight aggregate is obtained;

[0061] (3) Preparation of magnesium chloride solution: 16.64g of magnesium chloride is prepared into an aqueous solution with a mass fraction of 26%, and 1g of emulsified silicone oil defoamer is added, fully stirred un...

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Abstract

The invention discloses a composite building material with alkaline-residue light-weight aggregate. The composite building material is characterized by being prepared from the following raw materialsin percentage by weight: 70-85% of alkaline-residue light-weight aggregate, 0-12.3% of mineral admixture, 0-9.3% of water glass solution, 0-0.55% of fiber-reinforced material, 4.8-23.4% of light-calcined magnesia, 1.5-12.6% of magnesium chloride, 0.05-0.5% of defoaming agent and 0.1-0.36% of composite modifying agent, wherein the alkaline-residue light-weight aggregate is separated from industrialalkaline residues, the particle diameter of the alkaline-residue light-weight aggregate is less than 0.85mm, and the bulk density of the alkaline-residue light-weight aggregate is 700-800kg / m<3>; theconcentration of the water glass solution is 10-20%; the mineral admixture is fly ash and / or silicon powder; the mass ratio of the mineral admixture and the alkaline-residue light-weight aggregate is0-0.5. The composite building material disclosed by the invention has the beneficial effects that after stabilizing treatment of the alkaline-residue light-weight aggregate, the properties such as the strength, the water resistance, the weathering resistance and the wear resistance are obviously improved; the doping amount of alkaline residues is far higher than that of recycling treatment of theexisting alkaline residues, special equipment is not needed and the form of the building material is diversified.

Description

technical field [0001] The invention relates to the field of alkali slag building materials, in particular to an alkali slag lightweight aggregate composite building material and a preparation method thereof. Background technique [0002] In the past 20 years, my country, as the world's largest producer of soda ash, has become more and more serious about the pollution of soda slag while the soda-making industry is developing. According to the calculation of my country's ammonia-soda soda ash production capacity of 15 million tons, the output of solid waste soda slag is nearly 5 million tons. tons / year. [0003] At present, domestic alkali slag is mainly treated by stockpiling, and the disorderly stacking of alkali slag poses a great threat to the local ecological environment, residents' health and living environment; relevant departments use alkali slag as a Backfill soil, but the treatment efficiency is low and the effect is not ideal. [0004] The elements contained in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/32C04B20/02C04B18/04
CPCC04B20/023C04B28/32C04B2201/20C04B2201/50C04B14/304C04B14/46C04B18/0481C04B22/12C04B22/149C04B22/165C04B24/04C04B24/42C04B22/148Y02W30/91
Inventor 张志远张羊
Owner 安溪中科镁基科技有限公司